SpaceX spent $329 million on Tesla’s Megapack battery systems during the first half of 2026, highlighting the growing energy demands of the company’s expanding artificial intelligence infrastructure.

According to SpaceX’s latest earnings report, $295 million of those purchases were made during the second quarter alone, marking a sharp increase in investment in large-scale energy storage.

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Powering AI Infrastructure

The battery systems are expected to support SpaceX’s AI data centre operations, where electricity demand fluctuates significantly as computing workloads increase during AI training and inference.

Megapacks help stabilise power consumption by storing electricity and providing additional capacity during periods of peak demand, while also serving as backup power in the event of outages.

Growing Links Across Musk’s Companies

The purchases further illustrate the close operational ties between Elon Musk’s businesses. Before merging with SpaceX earlier this year, xAI had also invested heavily in Tesla’s battery storage systems for its own data centres.

SpaceX’s regulatory filing also showed the company had previously purchased $131 million worth of Tesla Cybertrucks, reflecting continued commercial activity between Musk-led companies.

AI Drives Infrastructure Investment

As AI companies expand computing capacity, demand for energy infrastructure is rising alongside investment in data centres. Battery storage has become an increasingly important component of those facilities, helping operators manage electricity costs while maintaining stable performance during intensive computing workloads.